US Patent 8857569 Elevator access control system
Patent 8857569 was granted and assigned to Inventio on October, 2014 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
June 29, 2011
Date of Patent
October 14, 2014
Patent Application Number
13171562
Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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